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    If the checksum is entirely 0 (0x0), it is...

    If the checksum is entirely 0 (0x0), it is ignored on UDP packets. Checksums are optional on UDP packets according to this.



    When NAT is active it will either recalculate the checksum or zero...
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    You could run "show processlist" on a connected...

    You could run "show processlist" on a connected mysql client. Maybe that gives a clue who's working hard on your database. Any connected client should be listed there. A good start could also be to...
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    It will mostly depend on what you are going to do...

    It will mostly depend on what you are going to do with your cluster. Maybe BOINC does what you want? BOINC is still actively developed and widely used in cloud computing projects.
  4. Awk is a tool suited for CSV-like text files. Try...

    Awk is a tool suited for CSV-like text files. Try sed! There are several good easily findable examples in the internets if you search for "sed replace newline".
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    gsub should be able to replace every W...

    gsub should be able to replace every W (gsub("[W]", "")) and every not-W (gsub("[^W]", ""). Comparing the length of both resulting strings should then be enough - no fancy arithmatics needed.

    More...
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    awk can definitely do the job. However, I have...

    awk can definitely do the job. However, I have neither the time nore the knowledge to give you ready-to-rumble code snippets. Work your ways through awk tutorials on how to count characters with it....
  7. See #3 in the Forum Rules...

    See #3 in the Forum Rules

    Homework is there to learn. Do that - it won't do any harm and you are on the right track with regular expressions. ;)
  8. Maybe too late, but: STOP RIGHT THERE! If...

    Maybe too late, but:

    STOP RIGHT THERE!

    If there is important data on your drive you should not power it on again. There may be serious physical malfunction that can physically destroy the...
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    I don't want to flame, but I wonder why you would...

    I don't want to flame, but I wonder why you would expect serious and good answers from people that are not involved with that project? If something is unclear, you should ask your mentor / project...
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    [SOLVED] Be careful: if setting the new date was a per-row...

    Be careful: if setting the new date was a per-row action (i.e. a different value for every row) the above script wouldn't work. The following SQL (or a slightly modified version of it) could instead...
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    You could definitly log into the remote server...

    You could definitly log into the remote server via ssh, reverse the file (tail -r) and scp the result to your local computer and while it downloads and grows in size you can examine it with tail.
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    I looked over the DHCP protocol specification and...

    I looked over the DHCP protocol specification and such kind of data is only mentioned as DHCP extensions. Maybe you are able to reconfigure your DHCP client software to not use extensions? Beware:...
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    This is a guide how one can set up a scalable DNS...

    This is a guide how one can set up a scalable DNS cluster:

    Building Scalable DNS Cluster using LVS - LVSKB

    And you most likely have to learn how the hardware of such clusters should look like....
  14. Averaging the hop count from one specific node in...

    Averaging the hop count from one specific node in a network to another is - in theory - possible. To calculate it one would have to repeat doing a traceroute until one has enough samples so that a...
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    Sure. It depends on the type of RAID...

    Sure.



    It depends on the type of RAID you've got there.

    1] If it is a RAID0 you got a problem as replacing the drive will actually destroy the RAID. Once the drive has bad sectors and...
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    Doing a ping on someones computer is not a crime...

    Doing a ping on someones computer is not a crime and it does not hurt if someone responds on that. There are various other means to know if a host is alive or not once you know the ip address. Thus,...
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    Ok, so the filesystem is not corrupt. This would...

    Ok, so the filesystem is not corrupt. This would look to me as if there is only one option left:

    You're trying to mount something that is not what it claims to be. Install the the cloned hard disk...
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    DHCP is configured on the router and the other...

    DHCP is configured on the router and the other network devices are configured to use DHCP for getting their network configurations.

    DHCP Server]
    I'm not going to explain how you configure DHCP on...
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    Have you checked the reiserfs for unfixed errors?...

    Have you checked the reiserfs for unfixed errors?


    ~# reiserfsck --check /dev/sdN

    If that raises an error 6 again, you could try to fix the fs by:


    ~# reiserfsck --fix-fixable /dev/sdN
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    I can't grasp what you are doing there. Have you...

    I can't grasp what you are doing there. Have you plugged your disk into an usb port and try to boot from there? Until now I supposed that you were attaching the disk to an usb port to straighten some...
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    Locate /etc/fstab on the cloned disk and fix...

    Locate /etc/fstab on the cloned disk and fix possible references to /dev/hda there too.
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    If the original disk was able to boot correctly,...

    If the original disk was able to boot correctly, I suppose that should do the job, doesn't it? Was the other disk somehow damaged or is there any other possibility that the data on the disk became...
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    Well, you either boot into the right partition or...

    Well, you either boot into the right partition or you have to fix the bootloader configuration on the disk if there is one. You can make use of an USB live linux to check whether all files are in...
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    Generally it is not a good idea to leave...

    Generally it is not a good idea to leave connections open for someone that tries to gain access to your server. It opens doors to some very effective DOS attacks. Handling such cases by firewalling...
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    If you know that the filesystem should be ext3...

    If you know that the filesystem should be ext3 (or at least ext2) and the first superblock is broken you can try to get to a backup superblock which ext2+3 creates by itself. How is described here:
    ...
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